Miniature magnetic-levitated lens driving device
US8040621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2010 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jan 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A miniature magnetic-levitated lens driving device includes a lid, a casing, a lens module, a plate spring, and a magnetic-levitated module. The lid has a hollow structure and is coupled to the casing. The casing is formed therein with a receiving space. The lens module is provided in the receiving space. The plate spring is fixed between the lid and the casing and configured to resiliently confine the lens module to the receiving space. The magnetic-levitated module is provided in the receiving space and corresponds in position to the lens module. A magnetic repulsive force is produced by and between the magnetic-levitated module and the lens module, and in consequence the lens module is magnetically suspended in the receiving space formed by the lid and the casing, so as to save power, and minimize friction and microparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.